test_welltest_dpds errors in komodo bleeding

[berland]

Due to breaking changes in pytest 7.0.0,

• https://docs.pytest.org/en/latest/changelog.html#breaking-changes
• fix: prevent approx from being used without a comparison pytest-dev/pytest#9061

tmp_path = PosixPath('/tmp/pytest-of-f_scout_ci/pytest-1503/test_to_csv0')

    def test_to_csv(tmp_path):
        """Test to_csv"""
    
        os.chdir(tmp_path)
    
        vec = np.array([0, 0.5, 1, 2])
        welltest_dpds.to_csv("mock.csv", [vec])
        assert Path("mock.csv").exists()
        lines = Path("mock.csv").read_text(encoding="utf8").splitlines()
        assert len(lines) == 4
    
        welltest_dpds.to_csv("mock.csv", [vec], ["vec"])
        assert Path("mock.csv").exists()
        lines = Path("mock.csv").read_text(encoding="utf8").splitlines()
        assert len(lines) == 5
    
        vecb = np.array([1, 0.5, 3, 100])
        welltest_dpds.to_csv("mock.csv", [vec, vecb], ["vec", "vecb"])
        assert Path("mock.csv").exists()
        lines = Path("mock.csv").read_text(encoding="utf8").splitlines()
        assert len(lines) == 5
    
        dframe = pd.read_csv("mock.csv", skipinitialspace=True)
        assert dframe["vec"].size == 4
>       assert pytest.approx(dframe["vecb"].iloc[-1] == 100)
E       AssertionError: approx() is not supported in a boolean context.
E       Did you mean: `assert a == approx(b)`?

/tmp/jenkins-komodo-f_scout_ci/workspace/unit-tests/subscript/test-root/tests/test_welltest_dpds.py:268: AssertionError